From owner-freebsd-current@FreeBSD.ORG Sat Oct 6 10:21:26 2007 Return-Path: Delivered-To: current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id B24D616A418 for ; Sat, 6 Oct 2007 10:21:26 +0000 (UTC) (envelope-from marc@blackend.org) Received: from abigail.blackend.org (ns0.blackend.org [82.227.222.164]) by mx1.freebsd.org (Postfix) with ESMTP id 3323113C459 for ; Sat, 6 Oct 2007 10:21:25 +0000 (UTC) (envelope-from marc@blackend.org) Received: from gothic.blackend.org (gothic.blackend.org [192.168.1.203]) by abigail.blackend.org (8.13.4/8.13.3) with ESMTP id l96ALEQC080868; Sat, 6 Oct 2007 12:21:14 +0200 (CEST) (envelope-from marc@abigail.blackend.org) Received: from gothic.blackend.org (localhost [127.0.0.1]) by gothic.blackend.org (8.14.1/8.14.1) with ESMTP id l96ALE6P033954; Sat, 6 Oct 2007 12:21:14 +0200 (CEST) (envelope-from marc@gothic.blackend.org) Received: (from marc@localhost) by gothic.blackend.org (8.14.1/8.14.1/Submit) id l96ALDWv033953; Sat, 6 Oct 2007 12:21:13 +0200 (CEST) (envelope-from marc) Date: Sat, 6 Oct 2007 12:21:13 +0200 From: Marc Fonvieille To: Jeff Roberson Message-ID: <20071006102113.GC976@gothic.blackend.org> References: <20071002165007.D587@10.0.0.1> <20071006074429.GB976@gothic.blackend.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20071006074429.GB976@gothic.blackend.org> X-Useless-Header: blackend.org X-Operating-System: FreeBSD 7.0-CURRENT User-Agent: Mutt/1.5.16 (2007-06-09) Cc: current@freebsd.org Subject: Re: ULE/yielding patch for testing. X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 06 Oct 2007 10:21:26 -0000 On Sat, Oct 06, 2007 at 09:44:29AM +0200, Marc Fonvieille wrote: > On Tue, Oct 02, 2007 at 04:53:33PM -0700, Jeff Roberson wrote: > > Enclosed is a patch that does two things: > > > > 1) Reduces UP context switch time by over 10% making it faster than 4BSD > > on UP. On SMP it's hard to compare since ULE can do as many as 30x as many > > switches per second on my 8way system. > > > > 2) Restores old sched_yield() behavior from 6.x. This was changed in > > -current unintentionally I think. > > > > I'd appreciate any extra testing. The ULE context switch time improvements > > required some changes to the frequency that we recalculate priorities. I'm > > mostly interested in hearing whether this causes any regression in normal > > workloads. > > > > [tested with _ULE] > > This seems to help a bit the things for me (desktop use during > compilations). But 6.X is still faster, i.e, less lags and less jerky > mouse movements during port builds. > Thanks for spending time improving things, I really appreciate it. > After more testing, the lag problem is caused by the use of firefox. Once I try to open a heavy webpage, both firefox and Xorg become slow, the rest is fine. By the "rest" I mean: audacious playing mp3s, wget and ncftp downloading huge (100MB) files, compiling wine and aMule running. -- Marc